The Best Ruby Developers & Programmers For Hire In Spain

Check out Ruby Developers & Programmers in Spain with the skills you need for your next job.

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$50 hourly
- 5.0/5
- (9 jobs)
I'm a highly skilled software developer who enjoys writing code that others can read, understand and follow. I'm responsible for designing and developing highly distributed Ruby on Rails web applications for high performance, high traffic, advanced interactive sites.

Ruby
Linux System Administration
React
Angular
Ruby on Rails
$60 hourly
- 5.0/5
- (19 jobs)
» Results-oriented professional with 20 years experience in IT and Quality Assurance. » 15+ years of success together with oDesk/Elance-oDesk/Upwork’s Engineering team. » Broad knowledge and experience in matching appropriate technologies, designs, and systems development techniques with organization needs, capabilities, and resources. » Ability to plan and implement development and testing strategies and develop user teams for large-scale technology implementations

Ruby
Software QA
Web Design
QA Management
QA Engineering
Selenium WebDriver
RESTful API
HTML
Apache Groovy
Git
JavaScript
CSS
Microservice
AJAX
$150 hourly
- 5.0/5
- (31 jobs)
I have vast experience in creating, training and productizing large-scale foundational deep learning models in audio, text and image domains. My background is a combination of math and software engineering, and I understand both the low-level details of deep learning models and how large software apps should be architected. Some highlight projects: - Designing, training, and productizing a large foundational model for audio processing - Led an ML/Data backend team at Christie's, doing advanced data gathering and analysis in unstructured texts - Ex. CTO at Channelkit – a venture-backed bookmarking startup - Founder/CTO at Atelier (atlr.io) – a no-code headless storefronts platform

Ruby
JavaScript
Shopify
Machine Learning
Artificial Neural Network
Shopify Plus
Computer Vision
Ecommerce
Elixir
Python
$70 hourly
- 4.7/5
- (57 jobs)
With a rich background in software engineering, I have been actively involved in building web services since 2003, starting with Perl. Later, my main focus shifted to PHP, and since 2009, Ruby has been my primary language of choice. This diverse background has equipped me with a deep understanding of various languages and frameworks, allowing me to adapt quickly to new technologies and deliver effective solutions to every project. I am language agnostic, adept at picking up new languages and technologies as needed. Today, my areas of specialization include Ruby, Go, JS/TS and DevOps. I am passionate about TDD/BDD, tackling scalability challenges, optimizing performance, and automating infrastructure.

Ruby
AWS Lambda
React
PostgreSQL
JavaScript
Amazon ECS
Terraform
MongoDB
AWS CloudFront
Docker
API
$50 hourly
- 5.0/5
- (7 jobs)
More than 15 years I develop utilities for processing boring things. That makes people happy, thats why I love my job. I have great experience in the following areas: MySQL, Linux, Perl, Ruby, Ruby on Rails, Selenium, VBA and pivots in Excel, Mailchimp, and some experience almost in every popular technology in computer world.

Ruby
MySQL
Data Structures
Linux System Administration
Data Mining
Database Design
Data Analysis
Adobe Photoshop
Ruby on Rails
Database Administration
InterBase
Citrix Hypervisor
Microsoft Excel
TCP/IP
Perl
$100 hourly
- 5.0/5
- (11 jobs)
⭐⭐⭐⭐⭐ "He's independent, fast, reliable, and super competent. We really lucked out!" I'm a Top Rated Plus Ruby on Rails freelancer (best 3% talent on Upwork) with many 5-star reviews. I created the world's largest Influencer Search Engine 8 years ago (heepsy.com) and haven't stopped helping organizations to build their products ever since. My experience 🥋 ⚡️8+ years of web development with Ruby on Rails ⚡️Experience as team leader and project manager ⚡️Frontend - React, Hotwire and Stimulus ⚡️Databases - PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch, Neo4j ⚡️DevOps - AWS, GCP, Docker, CircleCI, GitHub, Heroku, Kubernetes, Terraform, Selenium ⚡️Other - Shopify, New Relic, Datadog, Auth0, Stripe My values ✅ Be polite, respectful, and enjoyable to work with Underpromise, overdeliver Communicate often, communicate fast Don't rely on marketing; invest in quality Be efficient, think ahead Your success = My success I'd love to meet you and learn more about your project. Let's chat.

Ruby
Unit Testing
AWS Systems Manager
A/B Testing
AWS Lambda
Ruby on Rails
JavaScript
MongoDB
SQL
React
$60 hourly
- 5.0/5
- (11 jobs)
Hey, Looking for a trusted technical partner? I'm a dedicated full stack developer with excessive background in Elixir, Ruby, and JavaScript. I have 10 y.o.e. in building MVPs for venture capital and scaling up products globally. My area of expertise covers energy domain, finance, healthcare, e-commerce, music industry, SaaS. I know how to build a successful product from scratch. I'm also used to work with existing codebase and I can help with technical debt. I can work on my own or as a part of your team to: - develop and validate new features; - add new functionality for existing projects; - add test coverage and do refactoring. I can work in your time zone and speak English fluently. My preference is long-term cooperation. My core expertise includes: - Elixir, Phoenix, OTP, Ecto, Erlang - Javascript, Vue.js, React.js, React Native, Node.js - Ruby, Ruby on Rails, Hanami, Roda - SQL, PostgreSQL, MongoDB, AWS, Expect - Rest API, QraphQL, Salesforce API Let's jump into the call and talk how I can contribute to your project goals!

Ruby
Vue.js
Ruby on Rails Stack
React
Database Architecture
API Integration
Web Application
Web Development
JavaScript
Python
Software Architecture
AI Development
Ruby on Rails
Phoenix Web Framework
Elixir
$35 hourly
- 4.8/5
- (33 jobs)
Hello All! Have you ever wondered what is like to work in your dream job? That is precisely what i do. I do take care of all technical stuff in the online marketing world. To cite some of the services i provide: • Create a webpages from scratch • Migrate your old Wordpress site to a new domain/hosting • Speed load issues • Install & Update Wordpress • Malware Removal • Install & configure/customize Themes • Install & configure Plugins (eg. SEO Yoast, WooCommerce, Revolution Slider, etc.) • Fix styling/design issues (CSS & HTML) • Create new plugins from scratch (PHP Expert) • Fix your site/widget/page and make it responsive • Move any CMS to Wordpress

Ruby
HTML
WordPress
PrestaShop
Bootstrap
SQL
jQuery
PHP
Magento
CSS
$40 hourly
- 5.0/5
- (3 jobs)
I'm a software engineer with over a decade of hands-on experience in creating advanced solutions and data-centric applications. My expertise lies in leveraging Artificial Intelligence (AI) and OpenAI technologies to create intelligent, scalable systems. Armed with a Master's degree in computer science, I combine academic rigor with practical expertise, consistently delivering innovative projects that push the boundaries of digital transformation. What can I help you with? ✅ Custom Web app Development ✅ SaaS Development ✅ AI Agent/Chatbot Development ✅ AI and Machine Learning Solutions ✅ Data Analytics and Visualization ✅ Natural Language Processing (NLP) Solutions ✅ Integration of OpenAI Technologies ✅ Predictive Analytics ✅ Intelligent Automation ✅ Need an MVP? Let's go! Technologies: ✔️ OpenAI API, DALL-E 2, GPT-4V, Transformers ✔️ Ruby on Rails, Grape ✔️ jQuery, ReactJS, StimulusJS ✔️ PostgreSQL, MySQL, MongoDB, Neo4j, Elasticsearch, Redis ✔️ RSpec, Capybara, Cucumber ✔️ Unicorn, Puma, Nginx, Passenger ✔️ Sidekiq, Whenever ✔️ JSONAPI, GraphQL ✔️ Docker, Ansible, Capistrano ✔️ AWS, Heroku, Digital Ocean By the way... If you're starting a project or still exploring its early stages, let's discuss! I'm here to help you flesh out the details, enabling you to develop the application you envision. And if you're searching for a developer who can execute the project efficiently and correctly from the get-go, reach out to me. Let's collaborate and build something remarkable together!

Ruby
OpenAPI
Chatbot Development
Machine Learning
Artificial Intelligence
PostgreSQL Programming
GPT-4
AI Agent Development
Python
Amazon Web Services
API Integration
Microservice
Web Development
JavaScript
Ruby on Rails
$35 hourly
- 5.0/5
- (12 jobs)
Looking to seamlessly 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗲 𝗜𝗧 𝘄𝗶𝘁𝗵 𝘆𝗼𝘂𝗿 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗴𝗼𝗮𝗹𝘀?🛠️ With 10 years in management and a technical foundation, I'm here to help. From 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝘁𝗲𝗮𝗺𝘀 𝘁𝗼 𝗲𝘅𝗲𝗰𝘂𝘁𝗶𝗻𝗴 𝗺𝗮𝗷𝗼𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀, I've got you covered. Let's make IT work for your business.🚀 ____ 𝗔𝗿𝗲𝗮𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: Full-Stack Development, Front-End Development (𝗥𝗲𝗮𝗰𝘁, 𝗔𝗻𝗴𝘂𝗹𝗮𝗿, 𝗩𝘂𝗲), Back-End (𝗝𝗮𝘃𝗮, 𝗥𝘂𝗯𝘆, 𝗣𝗛𝗣, .𝗡𝗘𝗧, 𝗣𝘆𝘁𝗵𝗼𝗻, 𝗡𝗼𝗱𝗲, 𝗦𝗰𝗮𝗹𝗮), Native Mobile Development (𝗦𝘄𝗶𝗳𝘁, 𝗞𝗼𝘁𝗹𝗶𝗻), Cross-Platform Development (𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲, 𝗙𝗹𝘂𝘁𝘁𝗲𝗿), CMS Development (𝗪𝗼𝗿𝗱𝗣𝗿𝗲𝘀𝘀, 𝗦𝗵𝗼𝗽𝗶𝗳𝘆, 𝗠𝗮𝗴𝗲𝗻𝘁𝗼, 𝗗𝗿𝘂𝗽𝗮𝗹, 𝗪𝗲𝗯𝗳𝗹𝗼𝘄), DevOps Services, QA Engineering, UI/UX Design, Blockchain Development, AI/ML Development Services. 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀: Media & Entertainment, Automotive, GIS, E-COmmerce, Fintech, Healthcare, Education and others. ____ 𝗞𝗲𝘆 𝗽𝗼𝗶𝗻𝘁𝘀: 🧑‍💻 10 years of 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗶𝗻 𝗺𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝘄𝗶𝘁𝗵 𝗮 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗯𝗮𝗰𝗸𝗴𝗿𝗼𝘂𝗻𝗱 that includes one and a half years as a full-stack developer. My professional journey has led me from being a developer, progressing to a Project Manager (PM), then to the Project Management Office (PMO), and finally to becoming the 𝗛𝗲𝗮𝗱 𝗼𝗳 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝘆. ✅ My specialization lies in 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝘀𝗲𝗹𝗳-𝗺𝗮𝗻𝗮𝗴𝗲𝗱 𝘁𝗲𝗮𝗺𝘀. This means that while our customer focuses on their business, 𝘄𝗲 𝘁𝗮𝗸𝗲 𝗳𝘂𝗹𝗹 𝗰𝗵𝗮𝗿𝗴𝗲 𝗼𝗳 𝘁𝗵𝗲 𝗜𝗧 𝘀𝗶𝗱𝗲 𝗼𝗳 𝘁𝗵𝗶𝗻𝗴𝘀. Our teams start with a broad concept or idea, and by the end, 𝗽𝗿𝗼𝗱𝘂𝗰𝗲 𝗮 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 𝘁𝗵𝗮𝘁 𝗮𝗱𝗱𝗿𝗲𝘀𝘀𝗲𝘀 𝘁𝗵𝗲 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀'𝘀 𝗻𝗲𝗲𝗱𝘀 𝗮𝗻𝗱 𝗰𝗵𝗮𝗹𝗹𝗲𝗻𝗴𝗲𝘀. 🧳 I have worked on a 𝘁𝗼𝗽-𝟭𝟬 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗶𝗻 𝘁𝗵𝗲 𝗨𝗦 𝗶𝗻 𝗿𝗲𝗮𝗹 𝗲𝘀𝘁𝗮𝘁𝗲 rentals and served as a 𝗦𝗰𝗿𝘂𝗺 𝗠𝗮𝘀𝘁𝗲𝗿 𝗮𝘁 𝗖𝗜𝗕𝗖 (the largest bank in Canada). Under my guidance or with my direct or indirect participation, 𝗼𝘃𝗲𝗿 𝟯𝟬𝟬 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 have been executed. I've personally 𝗲𝘅𝗽𝗮𝗻𝗱𝗲𝗱 𝘁𝗲𝗮𝗺𝘀 𝗳𝗿𝗼𝗺 𝟮 𝗺𝗲𝗺𝗯𝗲𝗿𝘀 𝘁𝗼 𝟮𝟮 and have constructed 𝗼𝘃𝗲𝗿 𝟭𝟱 𝘀𝗲𝗹𝗳-𝗺𝗮𝗻𝗮𝗴𝗲𝗱 𝘁𝗲𝗮𝗺𝘀 that now operate independently under the leadership of various Project Managers. ____ 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀: 🧑‍💻 Over 𝟴 𝘆𝗲𝗮𝗿𝘀 𝗶𝗻 𝘁𝗵𝗲 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 business. 🚀 Successfully completed more than 𝟰𝟱𝟬 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗮 𝟵𝟵% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 𝗦𝗰𝗼𝗿𝗲. 🏆 Over 𝟲𝟬 𝗿𝗲𝘃𝗶𝗲𝘄𝘀 𝗼𝗻 𝘁𝗵𝗲 𝗖𝗹𝘂𝘁𝗰𝗵 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 with an average rating of 4.8 stars.

Ruby
PHP
Hybrid App Development
Design & Usability Research
UI/UX Prototyping
C++
Python
Java
JavaScript
iOS Development
Android App Development
Mobile App Development
Back-End Development
Front-End Development
Full-Stack Development
$40 hourly
- 0.0/5
- (0 jobs)
I'm a High-performing and hard-working computational biologist with a biotechnology background. I have experience in genomics, transcriptomics, software development, and data science. I can help you transform data into knowledge. - Data Scientist and Bioinformatician - Experience with Python, R, SQL, Ruby, Swift - Data Structures and Algorithms - Committed to delivering high-quality solutions

Ruby
Apache Spark
Linux
Scientific Computation
Biotechnology
Swift
TensorFlow
Computer Science
Git
Machine Learning
Data Science
SQL
Data Analysis
Python
R
$30 hourly
- 5.0/5
- (2 jobs)
Hi there! I'm a passionate software developer with extensive expertise in Ruby on Rails, DevOps, Node.js, and React.js. With over 10 years of experience in the industry, I've had the privilege of working on a diverse range of projects, from building web applications to optimizing deployment pipelines. My Skills: Ruby on Rails: I have a deep understanding of the Ruby on Rails framework and have developed scalable, high-performance web applications for various industries. Whether it's creating a new project from scratch or enhancing an existing one, I'm proficient in all aspects of Ruby on Rails development. DevOps: I'm well-versed in DevOps practices, including CI/CD pipeline setup, infrastructure as code (IaC), containerization, and cloud services. I can streamline your development process, ensuring faster releases and higher reliability. Node.js: Node.js is at the heart of many modern web applications, and I excel in leveraging its capabilities to build server-side applications, APIs, and real-time applications. I'm experienced in using Express.js and can ensure your Node.js applications are performant and scalable. React.js: For creating dynamic, user-friendly front-end interfaces, React.js is my go-to library. I'm proficient in building responsive and interactive web applications that provide an excellent user experience. Why Hire Me: Full-Stack Expertise: My skills span the full stack, from server-side development to front-end design, ensuring that I can handle your project comprehensively. DevOps Proficiency: I can optimize your development workflow and ensure a streamlined, automated, and efficient deployment process. Problem Solver: I enjoy tackling complex challenges and finding innovative solutions to meet your project's requirements. Quality and Efficiency: I'm committed to delivering high-quality code on time and within budget, ensuring that your project runs smoothly. Communication: Clear and transparent communication is a priority for me. I'll keep you updated on the project's progress and listen to your feedback throughout the development process. If you're looking for a dedicated and skilled Ruby on Rails, DevOps, Node.js, and React.js expert to take your project to the next level, feel free to reach out. Let's discuss how I can help you achieve your development goals!

Ruby
Consultation Session
Payment Gateway Integration
Stripe
ERP Software
Ecommerce Development Consultation
Shopify
Heroku
Vue.js
Expert
React Native
DevOps
React
Ruby on Rails
Node.js
$50 hourly
- 0.0/5
- (0 jobs)
Innovative software architect freelancer specializing in scalable, robust solutions. - Knows TypeScript/Next.js, Ruby/Ruby on Rails, microservices and message queues. - I've built microservices and monolith applications always considering the high-quality, efficient, and secure software systems. - Passionate about transforming complex requirements into elegant, maintainable code for diverse industries. - I believe in agile methodologies and the regular communication based on the clients need

Ruby
SQL
Next.js
TypeScript
Ruby on Rails
Communication Skills
$75 hourly
- 4.9/5
- (39 jobs)
As Top-rated Plus Developer, I am at the top best 3% of Freelancers at Upwork. In the last 12 years I worked in more than 25 web application projects. More than 35 total jobs and 8k hours billed only at Upwork. A few of my recent reviews: ⭐️ "Very good level of work, reliable and senior with Rails development." Lobster, Finland ⭐️ ⭐️ "Great experience working with Juan, fluent English and high level skills" Roper Properties, Spain ⭐️ ⭐️ "Juan is a very knowledgable developer and was easy to work." OmniSlots, Malta ⭐️ You may have bad experiences working with freelancers who: ❌ Don't communicate effectively. ❌ Never meet deadlines. ❌ Dissappear in the middle of the project. ❌ Budget skyrockets in time and costs ❌ Have no clue what you are talking about. ❌ Cannot work well in teams. If you want a freelancer that: ✅ Produces top-quality code to match your business specifications. ✅ Uses the most productive and modern technologies in the market. ✅ Does not stop until the job is completed to your satisfaction. ✅ Gives you regular, honest updates thorughout the project. ✅ Meets every deadline you give him. ✅ Good vibes and treat with your other team members. My proposal is: 😊 Create a full stack application based on your business requirements and designs. 😊 Best communications: Daily email report about the job done this day, and to-do next. Meetings as needed. 😊 Choose best productivity frameworks in the market, to create the quicker and more reliable project. 😊 Daily deployments to check daily changes in your application. 😊 High reliability, thanks to more than 90% automated test coverage. 😊 Performance and scalability issues solved as your business grows. All my solutions are around Ruby on Rails backend framework. Fully frontend development based on Stimulus/Turbo. Hybrid mobile apps with turbo-android, turbo-ios and Strada. High level solutions completed out of the box: Spina CMS, Solidus e-commerce, Redmine project management, Dicourse forums etc... Also have solutions for scrapping with Metainspector and OpenAI/ChatGPT with ruby-openai. I am continously reserching about all tools and frameworks for web development: PHP, Python, Lavarel, Django, React, Vue, Ember ... An I always have found Ruby on Rails as the mos productive and reliable option. even for the front end with Hotwire framework, fully integrated with Rails. Consider that also at some point we can create an Hibryd mobile App for both Anfroid and IOs with the same web code. I can administer your linux systems and databases, manage your deployments automating them. Also I have experience creating REST APIs with Swagger documentation for your clients, automating background jobs with Sidekiq, Integrating with other API providers like payments, authentication, etc. I can integrate different Blockshain APIs with your app. Also woorked integrating Crypto exchanges APIs. Also we can interact with wallets thorugh Web3.js, or even create contrancts for Ethereum compatible chains. All this integrated in your Web App. Contact me if you want to create a real web business.

Ruby
MySQL
jQuery
HTML5
HTML
PostgreSQL
CSS
Node.js
JavaScript
Ruby on Rails
$39 hourly
- 0.0/5
- (1 job)
I've experience with RoR and Python.( Django ) Other skills are Javascript (jQuery/JSON/Ajax), Java, PHP, twitter-bootstrap.

Ruby
HTML
CSS
jQuery
Ruby on Rails
Python
Backbone.js
Django
Node.js
JavaScript
$70 hourly
- 0.0/5
- (0 jobs)
Hi! I’m a Software Engineer with more than 10 years of experience in iOS development. I consider myself an ambitious engineer, an infinite learner with a growth mindset. I prefer quality over quantity. I take pride in responsibility and keeping promises. I enjoy working with smart, creative and humorous people. I continually strive to be one.

Ruby
Firebase
SwiftUI
Functional Testing
Object-Oriented Design
Game Development
Responsive Design
iOS Development
Node.js
Objective-C
Cocos2d
Swift
$65 hourly
- 2.9/5
- (19 jobs)
As an overqualified tech-savvy geek with rich experience in business, I have honed my skills to provide top-notch software solutions for my clients. I am a Senior Software Engineer and Software Architect, well-versed in Agile methodologies, and have also founded a startup. As a happy husband and father of two amazing girls, I bring a well-rounded perspective to my work. My core competencies include Software Development, Software Architecture, Database Design, Tech Consulting, and Business Automation. I excel in Javascript, Node.js, React, Ruby, and Ruby on Rails. Additionally, I am an expert in relational and graph databases, such as MySQL, Postgres, Neo4j, and others. I am proud to be a certified Neo4j Professional and a certified Neo4j Data Scientist, demonstrating my commitment to staying current in my field. My professional journey has taken me through roles as a Senior Software Engineer at GoDaddy and a Principal Software Engineer at Gartner, where I have gained invaluable experience and honed my skills. In summary, with a strong foundation in software engineering and architecture, coupled with my experience in tech consulting and business automation, I am confident in my ability to deliver outstanding results for clients. My track record of accomplishments and education speaks for itself, and I look forward to collaborating with you on your next project.

Ruby
Database Design
Software Architecture & Design
API
Graph Database
Cypher
RESTful API
Ruby on Rails
PostgreSQL
Node.js
React
Next.js
Neo4j
JavaScript
$20 hourly
- 5.0/5
- (3 jobs)
Hello there! I'm an Industrial Engineer with a knack for solving complex problems and optimizing systems. Currently based in Barcelona, I've worn many hats in my career—engineer, entrepreneur, and currently developer. 🔹 Versatile Tech Expertise: I can tackle any technology project, regardless of the language or requirements. Whether it's automating tasks, developing custom software, or building a digital solution from scratch, I've got the skills and the mindset to get it done. 🔹 Education: Bachelor's in Industrial Engineering If you're looking for someone who not only understands technology but also the complexities of business, then we'll make a great team. Let's connect!

Ruby
Flask
Notion
Excel Macros
Java
Kotlin
TypeScript
Angular
JavaScript
CSS 3
HTML5
Python
$35 hourly
- 0.0/5
- (0 jobs)
Solidity and Web/Mobile developer focussed on Blockchain and Crypto-related projects, building custom Apps, Crypto Gambling and Betting platforms, Trading Platforms and Exchanges, crypto lending and payment solutions. I am rich experienced in Golang, Rust, Java, Solidity, JavaScript, C#, C++, Node.js, Python, Object C, and fully equipped with this great technology. Blockchain ✔ Trading bot with strong strategies (Front running, snipping, arbitrage, contract bot) ✔ NFT marketplace with Smart UI and high end functionalities in Ethereum, Binance, Cardano, Solana, etc. ✔ DEX and Centralized Crypto Exchange ✔ Advanced Trading Platform (Stocks, CFD, Forex, Option, Features...) ✔ Portfolio Tracking Platform ✔ Multichain Web and Mobile Wallet ✔ Crypto Betting and Casino ✔ Yield Farming Protocols ✔ Liquidity Mining Protocols ✔ Automated Market Making (AMM) protocols ✔ Flash Loans ✔ Impermanent loss, governance tokens ✔ P2P/Pool Lending and Borrowing ✔ Crypto Collectible Platforms and Non-Fungible Tokens ✔ Custom dApps ✔ ERC20, ERC777, ERC223, ERC721, ERC1155 Smart Contract Development ✔ Token Design - Stabilcoins, Utility, Security, Investment, Dividend coins Web Stack: ✔ JavaScript/ Typescript, React.js, Node.js, Vue.js ✔ PHP / Laravel / Yii / Codeigniter ✔ MySQL, MongoDB, Redis, Oracle, Postgre, Sqlite ✔ 3rd Party API Integrations ✔ TDD methodology (Unit-testing) Python Stack ✔ Backend Framework (Django / Flask) ✔ Scraping and Automation (Selenium / Beautiful Soup/ Scrapy) ✔ Other Libraries (Pandas / Opencv / numpy) ✔ Env (Jupyter / Google colab) Mobile Stack ✔ Android System Development (AOSP) / Embedded Device ✔ Google glass, Smart watch, etc (App development for the smart device) ✔ Android App development (Java, Kotlin, React Native, Flutter) ✔ IOS development (swift) Thank you !

Ruby
DApp Development
Blockchain Development
Blockchain
Mobile App Development
NFT
Solidity
Smart Contract
web3.js
Ruby on Rails
Python
Web Development
Django
Node.js
JavaScript
$20 hourly
- 0.0/5
- (0 jobs)
I am a backend enginer, with: - 3+ years of Ruby/RoR experience - 2+ years of Erlang and Elixir experience - full-stack experience (HTML5/JS/CSS3), - PostgreSQL knowledge; I have crafted queries with 10x speedups over naive ActiveRecord scripts, - Docker knowledge; I have containerized Rails projects, - General Linux knowledge; I am comfortable on a bash terminal,

Ruby
PostgreSQL
Continuous Integration
JavaScript
jQuery
CI/CD
RESTful API
Elixir
GraphQL
Docker
Ruby on Rails
Erlang
Kubernetes
$35 hourly
- 0.0/5
- (0 jobs)
I'm a full stack developer with experience in building quality web applications. I mainly program in Ruby and PHP, but I have no problem using other programming languages. The frameworks / CMS that I usually work with are: Ruby: - Ruby on Rails - Spree/Solidus PHP: - Laravel Framework - Wordpress

Ruby
Spree
Ecommerce Website Development
WordPress
Ruby on Rails
Laravel
PHP
$60 hourly
- 0.0/5
- (0 jobs)
I'm a remarkably versatile, passionate programmer with a keen eye for innovative solutions and a relentless drive for excellence. Armed with a diverse skill set that spans front-end and back-end development, I thrive on turning complex problems into elegant, user-centric solutions. My journey in the world of programming began with a profound curiosity, evolving into a fervent dedication to mastering various languages and frameworks. Whether it's crafting intuitive user interfaces, architecting robust backend systems, or optimizing code for peak performance, I approach each project with an unwavering commitment to quality and a genuine enthusiasm for pushing the boundaries of what technology can achieve. With a penchant for continuous learning and a proven track record of delivering high-impact results, I am poised to contribute my expertise to cutting-edge projects and collaborate with like-minded individuals who share a passion for pushing the boundaries of technological innovation.

Ruby
Web Scraping
C#
RESTful Architecture
Front-End Development
Python Asyncio
Redis
MongoDB
MySQL
PostgreSQL
C++
JavaScript
Python
Ruby on Rails
Django
$32 hourly
- 0.0/5
- (0 jobs)
As a full stack web developer, I specialize in designing and implementing interactive websites and web applications from front-end to back-end. Utilizing my expertise in programming languages, databases, and frameworks, I create seamless user experiences and robust functionalities to meet the needs of clients and users. With a passion for innovation and continuous learning, I strive to stay ahead of industry trends and deliver cutting-edge solutions in the fast-paced world of web development.

Ruby
Dart
Swift
R
Rust
SQL
HTML
$34 hourly
- 0.0/5
- (0 jobs)
As a full stack web developer, I possess the technical expertise to create engaging and dynamic websites with a seamless user experience. From designing intuitive front-end interfaces to implementing robust backend systems, I am skilled in utilizing a wide range of programming languages and frameworks to bring creative visions to life in the digital realm.

Ruby
PHP
Shopify
C++
Dart
VB.NET
Assembly Language
$33 hourly
- 0.0/5
- (0 jobs)
As a full stack web developer, I have the skills and expertise to create dynamic and responsive websites that cater to both user interface and backend functionality. With a deep understanding of both frontend technologies like HTML, CSS, and JavaScript, as well as backend frameworks like Node.js, Django, or Ruby on Rails, I am able to design and implement seamless web solutions that meet the needs of clients and users alike. From concept to deployment, I ensure a smooth and efficient development process to deliver high-quality, innovative

Ruby
Drupal
R
C#
Java
Lua
C
$34 hourly
- 0.0/5
- (0 jobs)
As a full stack web developer, I possess the expertise to design and develop dynamic websites with both front-end and back-end functionalities. My skill set includes proficiency in programming languages such as HTML, CSS, JavaScript, and experience working with frameworks like React, Node.js, and Express. I excel in creating seamless user experiences by combining innovative design with efficient functionality, making me a valuable asset for any web development project.

Ruby
CSS
Swift
WordPress
Shopify
Java
C++
$35 hourly
- 0.0/5
- (0 jobs)
As a full stack web developer, I possess a comprehensive skill set in both front-end and back-end technologies, enabling me to create dynamic and responsive websites and web applications. With expertise in languages such as HTML, CSS, JavaScript, and server-side frameworks like Node.js and Django, I am able to design, develop, and deploy end-to-end solutions that meet the needs of clients and users. My keen eye for design and problem-solving abilities allow me to craft engaging user experiences while ensuring optimal functionality and

Ruby
PHP
Rust
C#
Swift
HTML
CSS
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